Door.



R. WOODS.

DOOR.

APPLICATION FILED MAY 12,1909,

Patented Nov. 1, 1910.

2 SHEETS-SHEET 1.

l h hl lln n P M IN VE N TOR 07?. WW Attorney R. WOODS.

DUOR.

APPLIOATIOH FILED MAY,12,1909.

974,327. Patented Nov. 1, 1910.

2 SHEETS-SHEETZ.

INVENTOR /r 2555- 1 W a A fiz w W 4%; -M. Attorney UNITED STATES PATENT OFFICE.

ROBERT WOODS, OF GRAND FORKS, NORTH DAKOTA, ASSIGNOR OF ONE-FOURTH TO PATRICK J. MULLOY, OF GRAND FORKS, NORTH DAKOTA.

DOOR.

Specification of Letters Patent.

Patented Nov. 1, 1910.

Application filed Kay 12, 1909. Serial No. 495,880.

To all whom it may concern:

Be itknown that l, ROBERT W'oons, of Grand Forks, in the county of Grand Forks and State of North Dakota, have invented certain new and useful Improvements in Doors; and I do herebydeclare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in doors and more particularly to such as are adaptable for use on grain cars, warehouses, freight depots and similar structures, the object of the invention being to provide a. vertically movable collapsible door which can be easily raised and disposed in compart form above thedoor opening.

A further object is to provide simple and 2.0 ellicient means whereby a vertically movable, collapsible door can be securely locked and its sections held tightly when the door is in its closed position.

'ith these objects in view the invention consists in certain novel features of construction and combinations of arts as hereinafter set forth and point out in the claims.

In the accompanvin drawings, Figure 1 is an inner face view 0 a door structure embodying my improvements. Fig. 2 is an outer face view of the same. Fig. 3 is a. vertical section and Fig. 4 is a sectional view showing the locking means.

1 represents a door frame, to the inner sides of the posts of which, grooved guideways 2 are secured and the upper ends of these uide-ways are curved inwardl as most'c early shown in Fig. 3. A sectional or collapsible door 3 is disposed between the guide-ways and the ends of the sections of said (1601' are movable in said guide-ways.

The sections of the door are preferably made of metal and the lower section 4 is provided at its lower edge with an inwardly projecting flange 5 and at its up er edge with an outwardly projecting ange 6.

Each of the superimposed sections of the door is rovided at the upper ed c with an outwardly projecting flange 7. I eaded ins 8 project outwardly from the upper e ges' of the several door sections and the pins of one door section receive slotted links or loops 9 which depend from the upper edge of the superimposed section, such construction serving at all times to maintain the become disposed over the inwardly projecting Y flange 5 at the lower edge of the lower door section 4 and serves to hold the latter tightly against the sill of the door-way. The upper end of each locking bar 10 is rovided with an arm 13, which, when the Focking bar is turned, will be made to project across the grooved-guide-way 2 over the upper door section and enter a notch 14.- in one wall of said guide-way. The arm 13 of each locking-bar projects outwardly beyond the notched wall of the guide-way and enters between perforated lugs'15 on said guideway, in which position it will be securely locked by a pin 17 passing through said perforated lugs. The arms 13 of the looking bars will thus hold the door against upward movement. ljlach locking bar 10 is provided with a series of notches for the accommodation of the several door sections 'so as to permit said door sections to be held closely together and said notches form shoulders 18 which engage the. lower edges of the respective'door sections and prevent any movement of the latter independently of each other when the door is in its closed position.

To limit the downward movement of the door sections when the door is being closed, the upper section is connected by means of a chain 19 with the top of the door frame.

Near the top of the door frame and in proximity to the curved portions of the grooved guide-ways 2, bearin s 20 are located for the accommodation 0 a horizontal shaft 21. On this shaft (preferably in proximity to the respective ends thereof) chains 22 are adapted to wind and the lower ends of these chains are connected with the door section 4 in proximity to the lower edge of the latter. When the locking-bars shall have been turned so as to release the door, the latter can be raised by turning the shaft 21 to wind the chains 22 thereon. During such raising Operation the door section will be collapsed and in such collapsed condition will be raised to the curved portions of the grooved guide-ways 2 and thus be disposed over the top of the door 0 ening. The shaft 21 may be rotated by suitable ratchet mechanism or in any other preferred manner, but in the drawings I have shown said shaft provided with a drum 23 for the reception of an operating chain or cord 24 by means of which to turn it and this drum is shown as being provided with a ratchet wheel 25 to be engaged by a dog 26. This dog is attached to thedoor frame in such manner that it can be disengaged from the ratchet wheel to permit the latter to turn freely when the door is allowed to descend in closing. The speed of-descent can be readily controlled by the operator with the use of the chain or cord 24 on the drum 23.

Various-slight changes might be made in the details ofconstruction of my invention without departing from the spirit thereof or limiting its scope and hence I do not wish to restrict myself to the precisedetails herein set forth, but,-

Having fully described my invention what I claim as new and desire to secure by Let ters-Patent, is, i v s 1. A door structure comprising a vertical movable collapsible door, and an upright, oscillatory locking bar for said door mounted in fixed bearings. V

2. A door structure comprising a series of relatively movable members, and oscillatory locking bars, each mounted in fixed bearings adjacent to'respective side edges of the door.

3. A door structure comprising a plurality of relatively movable members, and an oscillatory, upright lockin bar mounted in fixed bearings and adapte to engage the upper and lower members of the door.

4. A door structure comprising a series of vertically movable sections movable relatively to each other and a locking bar having a part to project over the upper section and a part to engage the lower section.

. 5. door structure comprising grooved guide-ways, a door comprising relatively movable sections movable in said guideways, the lower section having a projection,

and a locking bar having a part to project across the gulde-way over the upper section of the door, said lockin bar also having a shoulder at its lower en to engage the projection on the lower section of the door.

6. A door structure comprising two ooved guide ways, a door comprising re atively movable sections movable in said guideways, a locking'bar mounted in each guideway and adapted to be turned, each of said locki'ng bars provided at. its upper end with an arm to project across the grooved guidewa in wluch said locking bar is mounted, loc ing means to engage said arms to lock the locking bars an each of said locking bars provided at its lower end to engage the lower door section and hold the sa me tightly ways and a collapsible door movable in said I guide-ways, said door comprising a series of sections movable relatively to each other and each having a flange at one edge, headed pins projecting from relatively movable sections, and links or loops secured to said sections, the links or loops of one section engaging the headed pins of the next lower section. I

In testimony whereof, I have signed this specification in the presence of two sub-- scribing witnesses.

ROBERT WOODS.

Witnesses:

PATRICK J. MULLOY,

W. O. Woons. 

